LT1737IS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT1737IS#PBF is a current-mode PWM flyback switching controller operating from 4.5 V to 20 V input, housed in a 16-pin SOIC package. Designed for isolated DC-DC flyback converters in telecom, industrial power supplies, and battery charger applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LT1737IS#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.9000(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1737IS#PBF?
- Current-mode PWM control for inherent cycle-by-cycle overcurrent limiting
- Input voltage range: 4.5 V to 20 V covering 5 V logic and 12 V automotive rails
- Flyback topology support enabling isolated output voltage generation
- Programmable oscillator frequency for optimizing transformer size versus switching losses
- 16-pin SOIC package with standard PCB footprint for easy layout
- Built-in gate drive output for external MOSFET switching
What is LT1737IS#PBF used for?
The LT1737IS#PBF is primarily used in isolated flyback DC-DC converters for telecom line cards, industrial instrumentation, and distributed power architectures requiring galvanic isolation between input and output rails. Its current-mode control and 4.5 V to 20 V input range make it well suited for 12 V bus to isolated 5 V or 3.3 V supplies powering sensitive analog circuitry. Designers also employ it in battery charger circuits and AC-DC off-line auxiliary power stages where a compact 16-SOIC footprint is required.
What are the specifications of LT1737IS#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1610 (S16) |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 14V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 15mA |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 250kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT1737IS#PBF datasheet?
LT1737IS#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1737IS#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does LT1737IS#PBF support, and does it cover both 5 V logic and 12 V automotive rails?
The LT1737IS#PBF operates from 4.5 V to 20 V input, covering a 5 V logic bus directly and a 12 V automotive or telecom rail without an additional pre-regulator. The 14 V nominal rating aligns with standard 13.8 V vehicle battery voltages, making it practical for automotive auxiliary isolated power supplies.
Why is current-mode PWM control preferred in flyback converters, and how does LT1737IS#PBF implement it?
Current-mode control senses the switch current each cycle and terminates the on-time when the peak current matches a control setpoint, giving inherent cycle-by-cycle overcurrent protection. In the LT1737IS#PBF, this means a shorted output is handled without additional fault circuitry, and the converter responds to input voltage transients within one switching cycle—typically sub-microsecond response—compared to voltage-mode controllers that react over multiple cycles.
What package does LT1737IS#PBF use, and how does its footprint simplify PCB layout for an isolated power module?
The device uses a 16-pin SOIC package (10.3 mm x 7.5 mm body, 1.27 mm pitch), which is a widely supported standard footprint in EDA libraries and assembly houses. The 16-pin count provides enough dedicated pins for oscillator programming, compensation, gate drive, and sense inputs without requiring external multiplexing, simplifying the PCB layout of the control section in a compact 25 W flyback module.
What are the procurement considerations for LT1737IS#PBF given its YTEOL rating and lead-free (PBF) suffix?
With a 9-year estimated time to end-of-life, the LT1737IS#PBF should remain available through approximately 2033, supporting long-lifecycle industrial designs. The #PBF suffix designates a lead-free, RoHS-compliant tin-silver-copper finish, which is mandatory for CE-marked equipment sold in the EU and preferred for REACH compliance audits in global supply chains.
Related Guides
TLV76033 Selection Guide: Headroom, Heat, and Sourcing
Choose a TLV76033 3.3-V supply using manufacturer ratings, load profiles, dropout calculations, thermal checks, and exact orderable parts.
Nov 14, 2026
DP83TG720SWRHATQ1 Automotive Ethernet Board Design Guide
A practical DP83TG720SWRHATQ1 board checklist for host interfaces, startup, channel validation, qualified variants, and sourcing.
Nov 14, 2026
BQ76942PFBR Battery Monitor Selection and Procurement Guide
Choose BQ76942PFBR by cell count, protection architecture, factory configuration, measurement needs, and a controlled sourcing specification.
Nov 13, 2026
SEP0640Q38CB Surge Protection Board Validation Guide
Validate a SEP0640Q38CB protection network through operating-envelope review, surge-current routing, recovery tests, and assembly checks.
Nov 13, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
LT3062EDCB#TRPBF
Small Outline No-lead
Integrated Circuit
LT3062EDCB#TRMPBF
Small Outline No-lead
Integrated Circuit
LT8641IUDC#TRPBF
Other
Integrated Circuit
HMC412AMS8GTR
Small Outline Packages
Integrated Circuit
LT3062HMS8E#PBF
Small Outline Packages
Integrated Circuit
LT3062IMS8E#PBF
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $14.8200 | $14.82 |
| 19+ | $6.4900 | $123.31 |
| 100+ | $5.6851 | $568.51 |
| 250+ | $5.3250 | $1331.25 |
| 1000+ | $4.9000 | $4900.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit